ctdo.de/php/util.php

<?php

class Util {
    function css_link($src) {
        return '<link rel="stylesheet" href="'.$src.'">';
    }

    function generate_nav($active_page, $pages, $page_names) {
        $output = '<nav><ul>';
        foreach ($pages as $key => $page) {
            if ($page == $active_page)
                $output .= '<li>'.$this->html_link('/?page='.$page, 'active', $page_names[$key], FALSE).'</li>';
            else
                $output .= '<li>'.$this->html_link('/?page='.$page, '', $page_names[$key], FALSE).'</li>';
        }
        $output .= '</ul></nav>';

        return $output;
    }

    function html_link($href, $class, $innerHTML, $blank) {
        if($blank)
            return '<a href="'.$href.'" class="'.$class.'" target="_blank">'.$innerHTML.'</a>';
        else
            return '<a href="'.$href.'" class="'.$class.'">'.$innerHTML.'</a>';
    }

    function raumstatus() {
        $url = 'https://status.ctdo.de/api/simple/v2';
        $data = json_decode(file_get_contents($url), true);
        return $data['state'];
    }

    function str_mass_replace($searchs, $replacers, $string) {
        foreach ($searchs as $key => $search) {
            $string = str_replace($search, $replacers[$key], $string);
        }
        return $string;
    }

    function scan_for_events() {
        $s = scandir('events/');
        $output = array();
        foreach ($s as $f) {
            if(count(str_split($f)) == 13)
                $output[] = $f;
        }
        return $output;
    }

    function generate_event_list() {
        $events = $this->scan_for_events();
        $output = "";
        foreach ($events as $event) {
            $date = str_replace('.md', '', $event);
            $lines = file(__DIR__ . '/../events/' . $event);
            $title = $lines[0];
            $desc = $lines[1];
            $output .= '<div class="eventblock"><h3>'.$date.'</h3><a href="?page=events&e='.$date.'"><h2>'.$title.'</h2><p>'.$desc.'</p></a></div>';
        }
        return $output;
    }

    function get_event_content($date) {
        $lines = file(__DIR__ . '/../events/' . $date . '.md');
        $output = "";
        for ($i = 3; $i < count($lines); $i++)
            $output .= $lines[$i] . "\n";
        return $output;
    }
    
    function get_next_topic() {
        $output = new stdClass();
        $currentDate = new DateTime();
    
        // Find the next fourth Tuesday
        $nextFourthTuesday = clone $currentDate;
        $nextFourthTuesday->modify('next Tuesday')->modify('next Tuesday')->modify('next Tuesday');
        while ($nextFourthTuesday->format('N') !== '2') {
            $nextFourthTuesday->add(new DateInterval('P1D'));
        }
    
        $output->days = $currentDate->diff($nextFourthTuesday)->days+1;
        $output->date = $nextFourthTuesday->format('Y-m-d');
    
        return $output;
    }
}

?>